Air-source tri-generation heat pump drying unit

Abstract

The invention discloses an air-source tri-generation heat pump drying unit, and solves the problems that energy consumption is high and heat energy is wasted in a material high-temperature drying manner. The air-source tri-generation heat pump drying unit comprises a heat-preservation drying house, a heat exchanger, a first condenser, an electric heater, an air feeder, an exhaust fan, an electric air door, an evaporator, a heat pump circulating device and a controller, wherein a temperature and humidity sensor is arranged in the heat-preservation drying house; the heat exchanger is communicated with the heat-preservation drying house through a first air return pipe; the first condenser is communicated with the first air return pipe; the electric heater is connected with the first condenser; an air inlet of the air feeder corresponds to the electric heater, and an air outlet of the air feeder is communicated with the heat-preservation drying house; an air inlet of the exhaust fan corresponds to an air outlet of the heat exchanger, and an air outlet of the exhaust fan is connected with a third air return pipe; the electric air door and the evaporator are arranged between the heat exchanger and the exhaust fan sequentially; the heat pump circulating device is connected with the first condenser and the evaporator respectively; the controller is connected with the temperature and humidity sensor; and a first air outlet corresponding to the heat exchanger and a second air outlet communicated with the outdoor are formed in the third air return pipe. The air-source tri-generation heat pump drying unit is reasonable in structure and multifunctional, and has a good energy-saving effect.

Description

technical field [0001] The invention relates to a drying machine, in particular to an air source triple heat supply drying unit. Background technique [0002] In our country, high-temperature drying is mainly used in some special material places, such as high-temperature drying of tea, urban sludge, sharp fruits, fertilizers and other products. Commonly used drying methods for high-temperature drying include steam drying, microwave drying, and hot air oven drying. Since the drying of materials must meet at least two conditions: heating and dehumidification, and dehumidification in the process of high-temperature drying will waste a lot of heat, which sometimes accounts for 70% of the total heat. [0003] Specifically, the shortcomings of traditional high-temperature drying methods are mainly manifested in the following aspects: [0004] 1. Steam drying and hot stove drying need to burn a large amount of primary energy such as coal and firewood. When dehumidifying, the ...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an air source triple heat pump drying unit, which mainly solves the problems of high energy consumption and waste of heat in the existing high-temperature drying method for materials

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